Herdr is an open-source agent multiplexer that runs inside your existing terminal and owns the terminals of coding agents such as Claude Code, Codex, Cursor and OpenCode.
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A background server keeps panes alive across detaches, SSH drops and restarts, and each pane shows whether its agent is working, blocked or idle.
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Background server keeps agent panes running after detach or SSH disconnect and restores layouts after restarts
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Per-pane working, blocked and idle status so stuck agents are easy to spot
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Local and saved SSH machines combined in one window with a shared agent list
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CLI and socket API plus an agent skill so agents can spawn panes and prompt each other
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tmux-style prefix keys alongside first-class mouse splitting and dragging
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Plugin marketplace and a single Rust binary with no Electron
Open Source
Herdr is free and open source under Apache-2.0. You bring your own coding-agent CLIs and their subscriptions or API keys.
Best for
Developers running several CLI coding agents at once, locally or over SSH, who want tmux-style persistence with agent-aware status.
Not ideal for
Developers who want a graphical IDE or desktop app rather than a terminal-based workflow.
A fast-moving, widely adopted terminal runtime for multi-agent work that adds agent awareness and persistence without replacing the agents themselves.
Released v0.9.5 on October 14, 2026, a hotfix for v0.9.4 (October 13, 2026), which added `herdr plugin update` and persistent Windows notifications.
As of
Is Herdr free?+
Yes - Herdr is Open Source. Herdr is free and open source under Apache-2.0. You bring your own coding-agent CLIs and their subscriptions or API keys.
Is Herdr open source?+
Yes - Herdr is open source. Herdr is free and open source under Apache-2.0. You bring your own coding-agent CLIs and their subscriptions or API keys.
Who is Herdr best for?+
Developers running several CLI coding agents at once, locally or over SSH, who want tmux-style persistence with agent-aware status.
Who is Herdr not ideal for?+
Developers who want a graphical IDE or desktop app rather than a terminal-based workflow.
What are the best Herdr alternatives?+
The closest Herdr alternatives on ai.dosa.dev are Claude Code, Codex CLI, Amp - all listed under Terminal & CLI Agents.
Who makes Herdr?+
Herdr is developed by Herdr. It is listed in the Terminal & CLI Agents category on ai.dosa.dev.
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